/Engine/Source/Runtime/Engine/Public/AnimationRuntime.h
Lerp forFCompactPose. Stores results in PoseA. Performs PoseA = Lerp(PoseA, PoseB, Alpha);
static void LerpPoses ( [FCompactPose](API\Runtime\Engine\FCompactPose) & PoseA, const [FCompactPose](API\Runtime\Engine\FCompactPose) & PoseB, [FBlendedCurve](API\Runtime\Engine\Animation\FBlendedCurve) & CurveA, const [FBlendedCurve](API\Runtime\Engine\Animation\FBlendedCurve) & CurveB, float Alpha )